Car-truck.



wv. s. ADAMS.

. ca TRUCK. y.aPPu'cnoN hun nov. i?. |914.

Patented Oct. 26, 1915.

2 SHEETS-SHEET! 'WALTER Si ADAMS, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 TENS'. G. IBRILL C0, 0F PHILADELIIIIQ, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA..

CAR-TRUCK.

- Specification of Letters Patent.

Application filed november 17, i914; seriai no. 872,509.

TofqLZZ (willem t mgy concer/n.'

Be .,it known that I, WALTER S. AnAMs, a citizen of the United States, and a resident of the citf" of Philadelphia, county of Phila- `delphia,\and State of Pennsylvania, have lowing the bolster to be carried true with- 'oiit undue jar or vibration.

The present invention also resides in certain novel features of construction and combinatio'n of elements, which will be hereinafter described vand further pointed yout in the claims appended hereto.

Fior a. more particular description of -my invention, reference vis to be had to the accompanying drawings, in which- Figure 1 is a side elevation" of my improved bolster supporting arrangement with portions of the truck .being shown .to illustrate its application to the truck; Fig. 2 is a front elevationof the same; Fig. 3 is a sectional view of one end of the elliptic springs, showing the coil vsprings interposed between said elliptic springs; Fig. 4 is a side elevation, partly in section, of a modified form of bolster supporting means; Fig.

5 is a sectional view on the 'line 5-5 of Fig. 4, looking in the direction ofthe arrows; Fig. 6 is a plan view of the spring seats for supporting the coil springs, as shown in Figs. 4 and 5; Fig. 7 is another modified form of bolster supporting means; and Fig. 8 is a front elevation, partly in section, of the bolster supporting device shown in Fig. 7.

As my invention may be applied to many- 4kinds of trucks, I do not attempt to show dles 9 and other parts tobe described below.`

These bearing blocks 8 are fixed in place on the gusset plates 4 by bolts 10. Suspended from theispindles 9 are hangers 11. At the lower end of these hangers are carried spindles 12, which connect their lower ends, one spindle connecting two hangers. Each spin- Patenten oet. ee; iaia.

dle 12 is made square or of like cross section at its outer ends so as to fit corresponding parts of the hangers 1l and not turn therein. Between the hangers, however, the splndle 12 is made circular in cross section so as to receive and support a suitable bearing in a bracket 13, which i@ fixed by means of bolts 14 to a spring seat 15 and to angle barsl by rivets 17; the parts 13, 14, 15, 16 and 17 forming a yspring plank. The seats 15 hold the bands 18 of lower leaf springs 19. The bolster 7 is mounted on upper leaf springs 20, held together by bands 2l. Between the ends of the upper leaf springs 20 and lower leaf springs 19 are coil springs 22 and 23, one surrounded by the other, and arranged within the inner spring 2?, is a block 24 having shoulders 25 and projections 26 extending through perforations 27 in the leaf springs.

When a predetermined-weight, or numberl of passengers is onthe car, the coil springs 22 and 23 compress sufficiently to allow the leaf springs 19 and 20 to` rest 0n the shoulders 25 of the block 24, and the leaf springs thereupon carrying any additional load imposed upon the car. In the embodiment of my invention shown in Figs. 4, 5 and 6, there are spring seats 28, with springs 29 extending between them, between the ends of the leaf springs 19 and Each of the spring seats is provided with a pro]ection 30, said projections being preferably set at an angle to accommodate the curve of the leaf springs and a surface, 30a, said surface being preferably curved as shown. To accommodate the four leaf springs as shown herein, and to assist in uniting the same, each spring seat is preferably made in a single piece and each is provided with walls 31 for the reception of the springs 29.

In the further embodiment of my invention, as shown in Figs. 7 and 8, the leaf spring 2 0 is bent upwardly at 32 and the leaf spring 19 downwardly in like manner.

lExtending between the two widened portions 33 thus formed are' springs 34, carried by spring seatsr 35, each of said seats having projections 36, fitting perforationsl 137 in the leaf springs. This embodiment of my invention is not claimed inr this applica-- tionbut is covered by my co-pending application, Ser. No. 19,1lel8, liledApril 6th, 191,5.v In the embodimentA shown in Figs. Ll,

i and 6, the spring caps 28 come together When a certain Weight is imposed upon the portions 32 of the leaf springs come together and the balance of theload is then. carried by the leaf springs.

v Referring to the structureshown in Figs.

.1 to "3, it will be noted that when the coil springs 24 and 23 are compressed, the leaf springs bear against4 and are supported on the inner ends 25EL of the shoulders 25 of the block 24. When thus supported, the

operative leigth of the leaf springs is lessened and they thus become stronger and their resistance to the weight ofk th'e load is increased. `ln thestructure shown in Figs. 4, 5 and 6 'the saine result isy obtained when the leaf springs rest upon the surfaces 30a of the spring seats 28. In the structure shown in Figs. 7 and 8 this result is obtained when tlie points 32 come together.

lVhile I have shown and described one embodiment of my invention, it is obvious that it is not restricted thereto but is broad enough to `cover all structures that .come

'withinthe scope of the annexed claims.

What l claim is:

1.l ln a truck lof the class described, a

truck frame, a bolster mounted .in said Aframe,-leaf springs supporting saidbolster,

: adapted to rest together Iwhen the .coiled springs are sufficiently compressed.

2. ln a truck of the class described, a truck frame, hangers supported by said truck frame, transversely disposed leaf springs supported by said hangers, a bolster supported by said leaf springs, coil springs mounted betweenv said leaf springs and cups for said coiledsprings adapted to rest together when the coiled springs are sulficiently compressed. j

lnfa ltruck of the class described, a truck?y frame having hangers and means for supporting the saine, a spring plank, carried by said hangers, leaf springs carried by said spring plank and supporting the bolster, coil springs mounted between Said leaf springs and cups for said coiled springs adapted to lrest together when the coiled springs are sul'liciently compressed.

L.hln a trucli: of the class described, a

truck frame, ,a bolster mounted within said' frame, -leaf springs for supporting said bolster, coil springs mounted between the ends of'said leaf springs and cups for said coiled springs adapted to rest together when the coiled springs are sulliciently coinpressed.

5. In a truck of the class described,a truck frame, a bolster mounted, within said frame, leaf springs for supporting said bolster, coil Springs interposed between the -leaf springs and a block for limiting the compression of said coil springs.

6. In a truck'of the class described, a truck frame, a bolster mounted within said frame, leaf springs for supporting said bolster, perforations in said leaf springen block having projections adapted to enter the perforations in the leaf springs, springs interposed between the leaf springs and means on the blockA for limiting the compression of the .coil springs.

7. ln a truck of the class described, a truck frame, a bolster mounted within said frame, leaf springs for-supporting said bolster, a block interposed between the leaf springs, shoulders onsaid block7 projections on said block adapted to enter into perforations in theleaf springs and coil springs mounted between the leaf springs and surrounding the block. I

18. ln a truck of the class described, a truck frame, a bolster mountedvwithin said frame, leaf springs for supporting the bolster, coil springs mounted between the leaf springs, a block mounted. between the leaf springs and means on said block 'for limiting the movement of the ends of the leaf springs toward one another and shortening the operative length of theleaf springs when the limit of movement of the ends of the leaf springs toward one another has been reached.

9. ln a truck of the class described, a truck frame, 'a bolster mounted within said frame, lleaf springs for supporting said bolster, spring seats with curved edges adapted to abut mounted upon said leaf springs and coil springs supported by said spring seats.

10. In a truck of the class described, a

truck fraine,"a bolster mounted within said frame, leaf springs supporting said bolster, spring seats, with projections thereon adapted to enter perforations inthe leaf springs mounted at the ends ofthe leaf springs, coil springs-supported by said spring seats between the leaf springs.

11. In a truck of the class` described,- a truck frame, a bolster mounted within said frame, leaf springs supporting said bolster, spring seats mounted at the ends of the .leaf springs, projections on the springs seats at an angle to the same adapted to enter perforations in the leaf springs and coil springs arranged between the ends of the leaf springs and supported by the spring seats.

- 12. ln a device of the. class described, a truck frame, a bolster mounted within said frame, leaf springs for supporting said bolster, the ends of said leaf springs being formed to provide space for the reception of cups, cups with surfaces adapted to abut resting in the ends of said leaf springs and coil springs mounted in said cups.

13. In a truck of the class described, a truck frame, a bolster mounted Within said iframe, leaf sprlngs for supporting said bolster, thev ends of said springs being bent outwardly, Spring seats mounted on the leaf springs and coil springs mounted on the spring seats between the leaf springs.

14. A spring arrangement for vehicles, comprising leaf springs, compression coil springs mounted between the ends of said leaf springs and means for limiting the compression of said coil springs.

15. A spring arrangement for vehicles, comprising leaf springs, coil springs mounted between the ends of said leaf sprngs,'a block interposed between the ends of the leaf springs to limit the compression of the coil springs.

Signed at the city and county of Philadeb phia, State of Pennsylvania, this 2nd day of November, 1914.

WALTER s ADAMS. 

